org.lenskit.slopeone

Class WeightedSlopeOneItemScorer

java.lang.Object

org.lenskit.basic.AbstractItemScorer

org.lenskit.slopeone.SlopeOneItemScorer

org.lenskit.slopeone.WeightedSlopeOneItemScorer

All Implemented Interfaces:

ItemScorer

public class WeightedSlopeOneItemScorer
extends SlopeOneItemScorer

An ItemScorer that implements a weighted Slope One algorithm.

Field Summary

Fields inherited from class org.lenskit.slopeone.SlopeOneItemScorer

dao, domain, model

Constructor Summary

Constructors

Constructor and Description
WeightedSlopeOneItemScorer(RatingVectorPDAO dao, SlopeOneModel model, PreferenceDomain dom)

Method Summary

Modifier and Type	Method and Description
ResultMap	scoreWithDetails(long user, java.util.Collection<java.lang.Long> items) Score a collection of items and potentially return more details on the scores.

Methods inherited from class org.lenskit.slopeone.SlopeOneItemScorer

getModel

Methods inherited from class org.lenskit.basic.AbstractItemScorer

score, score

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

WeightedSlopeOneItemScorer

@Inject
public WeightedSlopeOneItemScorer(RatingVectorPDAO dao,
                                          SlopeOneModel model,
                                          @Nullable
                                          PreferenceDomain dom)

Method Detail

scoreWithDetails

@Nonnull
public ResultMap scoreWithDetails(long user,
                                           @Nonnull
                                           java.util.Collection<java.lang.Long> items)

Description copied from interface: ItemScorer

Score a collection of items and potentially return more details on the scores.

Specified by:

scoreWithDetails in interface ItemScorer

Overrides:

scoreWithDetails in class SlopeOneItemScorer

Parameters:

user - The user ID for whom to generate scores.

items - The item to score.

Returns:

The scores for the items. This result set may not contain all requested items. Implementations that support additional details will return a subclass of ResultMap that provides access to those details.